package com.bjc.util;

import com.bjc.pojo.Content;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;


/**
 * @program: es-api
 * @description: 工具类
 * @author: bjc
 * @create: 2020-07-29 22:17
 */
@Component
public class HtmlParseUtil {

    public static void main(String[] args) throws IOException {
        new HtmlParseUtil().parseJD("java").forEach(System.out::println);
    }

    public List<Content> parseJD(String keywords)throws IOException{
        //获取请求  https://search.jd.com/Search?keyword=java&enc=utf-8
        //前提 ,需要联网

        String url = "https://search.jd.com/Search?keyword="+keywords+"&enc=utf-8";
        //解析网页.(Jsoup返回Document 就是浏览器Document对象)
        Document document = Jsoup.parse(new URL(url),30000);
        //所有你在js中可以使用的方法，这里都能用!
        Element element = document.getElementById("J_goodsList");
//        System.out.println(element.html());

        List<Content> list = new ArrayList<>();

        //获取所有的li标签
        Elements elements = document.getElementsByTag("li");
        //获取元素中的内容，这里el 就是每一个li标签了
        for (Element el: elements) {
            String img = el.getElementsByTag("img").eq(0).attr("src");
            String price = el.getElementsByClass("p-price").eq(0).text();
            String title = el.getElementsByClass("p-name").eq(0).text();

//            System.out.println("================================");
//            System.out.println(img);
//            System.out.println(price);
//            System.out.println(title);
            Content content = new Content();
            content.setImg(img);
            content.setPrice(price);
            content.setTitle(title);
            list.add(content);
        }
        return list;
    }
}
